#include <iostream>

int main(int argc, char* argv[])
{
    if (argc != 3) {
        fprintf(stderr, "Usage:<%s> a b\n", argv[0]);
        return 1;
    }
    int a = atoi(argv[1]);
    int b = atoi(argv[2]);
    std::cout << a+b << "\n";

    return 0;
}